Big Brown Bat vs Eurasian beaver

Eptesicus fuscus compared with Castor fiber

Key Differences

• Big Brown Bat is Least Concern while Eurasian beaver is Vulnerable.

Taxonomic Classification

Rank	Big Brown Bat	Eurasian beaver
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class same	Mammalia (哺乳動物)	Mammalia (哺乳動物)
Order	Chiroptera (翼手目)	Rodentia (啮齿目)
Family	Vespertilionidae	Castoridae (Beavers)
Genus	Eptesicus	Castor (Beavers)
Species	Eptesicus fuscus	Castor fiber

Evolutionary Relationship

Big Brown Bat and Eurasian beaver share a common ancestor at the Class level: Mammalia. (哺乳動物)

Conservation Status

Big Brown Bat

LC — Least Concern

Eurasian beaver

VU — Vulnerable

Physical Characteristics

Attribute	Big Brown Bat	Eurasian beaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Big Brown Bat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Colombia, Ecuador, United States, and Venezuela.

Eurasian beaver

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Big Brown Bat

The Big Brown Bat (Eptesicus fuscus) is a species in the genus Eptesicus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Eurasian beaver

欧亚河狸（Castor fiber）在IUCN红色名录中被列为易危（VU）。面临野外高度濒危风险，种群数量下降，栖息地压力日益增大。

Shared Countries

Both species can be found in 1 countries:

🇧🇪 Belgium